bump httpx version to 0.23.0

[chrfla-cognite]

Improper Input Validation in httpx (https://github.com/advisories/GHSA-h8pj-cxx2-jfg2), which gets picked up by GitHub's Dependabot.

closes #14

[chrfla-cognite]

@RobertoPrevato Can you take a look at this, if you have a free minute? 🙏

[RobertoPrevato]

Hi @chrfla-cognite Sorry for late reply. I just approved the CI run and I'm willing to approve your PR. Thank You!

[codecov-commenter]

Codecov Report

Base: 93.04% // Head: 93.04% // No change to project coverage :thumbsup:

Coverage data is based on head (a511502) compared to base (0d63ae2). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #13 +/- ## ======================================= Coverage 93.04% 93.04% ======================================= Files 24 24 Lines 1237 1237 ======================================= Hits 1151 1151 Misses 86 86 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Neoteroi). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Neoteroi)

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[RobertoPrevato]

Would you like to change anything else before we merge this PR?

[chrfla-cognite]

LGTM, let's merge :)

[RobertoPrevato]

Done. :) I am going to publish it soon to PyPI - I just want to finish implementing some improvements to the library.

[chrfla-cognite]

Thanks a lot @RobertoPrevato!